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Orinoco Delta
The Orinoco Delta is a vast river delta of the Orinoco River, located in eastern Venezuela. Location The Orinoco Delta is one of the eight natural regions of Venezuela. It covers the whole of Delta Amacuro State and a few square kilometers of Monagas State and Sucre State, comprising all the mouths of the Orinoco. It is divided into two sections: the principal, at the northernmost part of the system, located between Caño Manamo and the left shore of Caño Araguao, where the majority of villages are established, including the state capital Tucupita; and the secondary, between the right shore of Caño Araguao and Río Grande. The Warao people live in the region. Hydrology The delta is fan-shaped, formed by the Orinoco River as it splits into numerous distributaries, called ''caños'', which meander through the delta on their way to the sea. The main distributary is called the Rio Grande, which empties south-southeast through the southern portion of the delta, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Amacuro
Delta Amacuro State (, ) is one of the 23 States of Venezuela, states of Venezuela, and is the location of the Orinoco Delta. The Paria Gulf and the Atlantic Ocean are found to the north, Bolívar State (Venezuela), Bolívar State is found to the south, the Atlantic Ocean and Guyana are found to the east, and Monagas State is found to the west. The state capital city is Tucupita. Delta Amacuro State covers a total surface area of and, in 2011, had a census population of 171,413. History Pre-Colonial Period Based on theories, anthropological evidence and oral tradition, the antecedents of human activity within this territory date from the time of the first displacements through America; Groups from the eastern slopes of the Peruvian Andes were introduced into the Lower Orinoco, they are called Kotoch or Chavinses; They developed knowledge of pottery (of which formal and technical reminiscences in ceramics are kept), and horticulture. With time other groups established the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niger River
The Niger River ( ; ) is the main river of West Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in south-eastern Guinea near the Sierra Leone border. It runs in a crescent shape through Mali, Niger, on the border with Benin and then through Nigeria, discharging through a massive River delta, delta, known as the Niger Delta, into the Gulf of Guinea in the Atlantic Ocean. The Niger is the third-longest river in Africa, exceeded by the Nile and the Congo River. Its main tributary is the Benue River. Etymology The Niger has different names in the different languages of the region: * Fula language, Fula: ''Maayo Jaaliba'' * Manding languages, Manding: ''Jeliba'' or ''Joliba'' "great river" * Tuareg languages, Tuareg: ''Eġərəw n-Igərǝwăn'' "river of rivers" * Songhay languages, Songhay: ''Isa'' "the river" * Zarma language, Zarma: ''Isa Beeri'' "great river" * Hausa language, Hausa: ''Kwara'' *Nupe language, Nupe: ''Èdù'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biosphere Reserves Of Venezuela
The biosphere (), also called the ecosphere (), is the worldwide sum of all ecosystems. It can also be termed the zone of life on the Earth. The biosphere (which is technically a spherical shell) is virtually a closed system with regard to matter,"Biosphere" in ''The Columbia Encyclopedia'', 6th ed. (2004) Columbia University Press. with minimal inputs and outputs. Regarding , it is an open system, with capturing |
Geographical Regions Of Venezuela
Geography (from Ancient Greek ; combining 'Earth' and 'write', literally 'Earth writing') is the study of the lands, features, inhabitants, and phenomena of Earth. Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. Geography has been called "a bridge between natural science and social science disciplines." Origins of many of the concepts in geography can be traced to Greek Eratosthenes of Cyrene, who may have coined the term "geographia" (). The first recorded use of the word γεωγραφία was as the title of a book by Greek scholar Claudius Ptolemy (100 – 170 AD). This work created the so-called "Ptolemaic tradition" of geography, which included "Ptolemaic cartographic theory." ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Regions Of Venezuela
Because of its natural structure, Venezuela can be divided into eight very distinct natural regions. In the evaluation of a natural region, the human element is not present. The natural region groups of Venezuela formed as a consequence of the association of geo-physical elements such as: geological constitution, relief, climate, hydrography, vegetation, soils, among others. The regional groups that make up the Venezuelan territory are: Andean Region The Venezuelan Andean system represents the terminal bifurcation of the Cordillera Oriental de Colombia, which in Venezuelan territory consists of two mountainous branches: the Sierra de Perija, smaller, slightly displaced from southwest to northeast with 7,151 km2 in Venezuela; and a larger, frankly oriented Southwest to northeast with about 40,172 km2, the Cordillera de Mérida, commonly known as the proper Venezuelan Andes. The highest point in Venezuela is located in this natural region.Pérez et al (Sep. 2005)"Altu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Deltas
A river delta is a landform, wikt:archetype#Noun, archetypically triangular, created by the deposition (geology), deposition of the sediments that are carried by the waters of a river, where the river merges with a body of slow-moving water or with a body of stagnant water. The creation of a river delta occurs at the ''river mouth'', where the river merges into an ocean, a sea, or an estuary, into a lake, a reservoir, or (more rarely) into another river that cannot carry away the sediment supplied by the feeding river. Etymologically, the term ''river delta'' derives from the triangular shape (Δ) of the uppercase Greek letter Delta (letter), delta. In hydrology, the dimensions of a river delta are determined by the balance between the watershed processes that supply sediment and the watershed processes that redistribute, sequester, and export the supplied sediment into the receiving basin. River deltas are important in human civilization, as they are major agricultural producti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangrove
A mangrove is a shrub or tree that grows mainly in coastal saline water, saline or brackish water. Mangroves grow in an equatorial climate, typically along coastlines and tidal rivers. They have particular adaptations to take in extra oxygen and remove salt, allowing them to tolerate conditions that kill most plants. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse due to convergent evolution in several plant families. They occur worldwide in the tropics and subtropics and even some temperate coastal areas, mainly between latitudes 30° N and 30° S, with the greatest mangrove area within 5° of the equator. Mangrove plant families first appeared during the Late Cretaceous to Paleocene epochs and became widely distributed in part due to the plate tectonics, movement of tectonic plates. The oldest known fossils of Nypa fruticans, mangrove palm date to 75 million years ago. Mangroves are salt-tolerant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Swamp Forest
Freshwater swamp forests, or flooded forests, are forests which are inundated with freshwater, either permanently or seasonally. They normally occur along the lower reaches of rivers and around freshwater lakes. Freshwater swamp forests are found in a range of climate zones, from boreal through temperate and subtropical to tropical. Appearance A freshwater swamp forest is a type of wetland ecosystem characterized by its unique hydrology and vegetation. These forests are typically found in low-lying areas, riverbanks, and floodplains where there is a consistent supply of freshwater. A forest that is frequently flooded with relatively fresh water rich in minerals is referred to as a freshwater swamp forest. Since tropical freshwater swamp forests are a subset of tropical rainforests, they share a number of environmental traits with other tropical rainforest formations. Beyond these shared characteristics, however, the environment in freshwater swamp forests and other tropical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially in the soils. Wetlands form a transitional zone between waterbodies and dry lands, and are different from other terrestrial or aquatic ecosystems due to their vegetation's roots having adapted to oxygen-poor waterlogged soils. They are considered among the most biologically diverse of all ecosystems, serving as habitats to a wide range of aquatic and semi-aquatic plants and animals, with often improved water quality due to plant removal of excess nutrients such as nitrates and phosphorus. Wetlands exist on every continent, except Antarctica. The water in wetlands is either freshwater, brackish or saltwater. The main types of wetland are defined based on the dominant plants and the source of the water. For example, ''marshes'' ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orinoco Wetlands
The Orinoco wetlands (NT0906) is an ecoregion of northeast Venezuela within the northern Orinoco Delta. It holds areas of tall grasses in flooded land, surrounded by mangroves and swamp forest, giving way to the drier Llanos savanna in the west. Location The Orinoco Wetlands ecoregion is in the northern Orinoco Delta in northeast Venezuela. They cover an area of . The wetlands adjoin or lie within the Orinoco Delta swamp forests. Near the coast they merge into the Amazon-Orinoco-Southern Caribbean mangroves. To the west they give way to the Llanos grasslands. The flooded grasslands of the Orinoco wetlands are found in seven separate patches north of the main Orinoco channel, surrounded by mangroves, swamp forest, moist forest and llanos. The main part is near Tucupita along the Caño Manamo, the westernmost distributary of the Orinoco. The second largest patch is along the Caño Macarao. To the north they are found along the Boca Grande and San Juan rivers, and in the alluv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guianan Mangroves
The Guianan mangroves (NT1411) is a coastal ecoregion of southeastern Venezuela, Guyana, Suriname, French Guiana and Brazil. The mangroves provide an important habitat for migrating birds that winter in the area. Large areas are intact, although they are threatened by destruction of the trees for timber and to make way for agriculture, and from upstream agricultural and industrial pollution. Location The Guianan mangroves ecoregion extends along the Atlantic coasts of northeastern Venezuela, Guyana, Suriname, French Guiana, and Cabo Orange in Brazil. It covers an area of about between the deltas of the Orinoco and Oyapock rivers. It includes the Gulf of Paria and the delta of the San Juan River. The largest part is in Venezuela in and around the Orinoco delta. The mangroves lie between the sea and areas of Orinoco Delta swamp forests, Guianan moist forests and Guianan freshwater swamp forests. The Guianan mangroves ecoregion is part of the Guianan-Amazon Mangroves global ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
